Hollywood forums

When the fantastic use of menus with MUI Royale also available as normal menus for other systems as Windows, Linux, for example dropdown menus as the IDE editor in Windows's Hollywood editor? but its use to make applications and games with these dropdown menus

It's not that easy. Linux, for instance, doesn't offer any system drop down menus at all. You'd have to use GTK for that but you cannot use GTK menus in an X11 window.